Boiler circulating device



V. ANDRIOLI, BOILER CIRCULAITING DEVICE. 4 APPLICATION FILED SEPT-b12320;

"Patented Jan. 17, 1922.

Q SHEETSTSHEET lu flb l el . V. ANDRIOLI. BOILER CIRCULATING DEVICE.

APPLICATION FILED SEPT. h 1920- 1,403,53 Q Patente d Jan. 17, 1922.

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V. ANDRIOVLI.

BOILER CIRCULATING DEVICE.

APPLICATION FILED SEPT. l, 1920.

V. ANDRIOLI.

BOILER GIRCULATING DEVICE.

APPLICATION HLED SEPT. I

4 SHEETS-SHEET 4.

Patented Jan. 17, 1922.

VITTORIO ANDRIOLI, OF NEXV YORK, N. Y.

BOILER CIRCULATING DEVICE.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Application filed September 1, 1920. Serial No. 407,444.

To all whom it may 000? com Be it known that I, Vrrronro ANDRIQLI, a subject of the King of Italy, residing at the city of New York, in the State of New York, have invented certain new and useful Improvements in a Boiler Circulating Device; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to improvements in a boiler circulating device and has for its object certain very important improvements modifying my apparatus already described in my co-pending United States application filed April 29th, 1919, Serial No. 293,523.

An object of the invention is the provision of a boiler circulating device, in which a subdivision of water is obtained and in which the water will be brought into the fire box from opposite sides thereof by separate apparatuses which, however, function together and in which the water is equalized, when the water is injected from either the right or the left sides of the boiler. By this arrangement and subdivision, a more rapid increase in the circulating current of water in the boiler is obtained, and the water in the said boiler will be much more quickly heated. 7

Another object of the invention is the provision of means whereby a notable increase of the direct surface of heating represented by the several boiler tubes in the tire box, takes place, thereby increasing the evaporation action of heat on the water in contact with the said boiler tubes. The large in crease of direct heating surface which comes to increase the fire box permits a considerable reduction of fuel, thereby making it possible to operate the boiler at a minimum cost.

Another object of the invention is the provision of means for increasing the direct heating surface, whereby the number of boiler tubes can be diminished, thus reducing the forced draft of the locomotive, eliminating a considerable amount of the necessary fuel now employed, and also conserving the fire box materially.

A still further object of the invention is the provision in a boiler such as above re ferred to, of two independent apparatuses for increasing and producing" water circulation, in which the water is equalized, levelled, and forced or fed into the fire box tubes from the collectors and subdivided into the various boiler tubes, the temperature being above that of the boiler, thus avoiding in such manner any undesired difference in temperature.

Still another object of the invention is the provision in boiler such as above referred to of novel water circulating means which will produce the greatest amount of boiler efficiency and which will be comparatively simple and inexpens've to manufacture, reliable and eflicient in use, and readily operated. V

Vith the above and other objects in view, the present, invention resides in the novel features of construction, formations, combi nations, and arrangements of parts to be hereinafter more particularly described,

claimed and illustrated in the accompanying drawings, forming a part of the present application, and inwhich Figure 1 is a horizontal sectional view constructed in accordance with the present invention and in which transverse boiler tubes are provided;

Figure 2 is a longitudinal sectional view, showing a portion at the fire box end of the boiler in elevation;

Figure 3 is a horizontal sectional view taken through a boiler constructed in accord ance with the present invention, in which longitudinal boiler tubes are provided;

Figure 4 is a longitudinal sectional view of the device disclosed in Figure 3;

Figure 5 is a transverse sectional view taken through a the box on the line 5-5 of Figure 2;

Figure 6 is a view taken on the line 6-4;) of Figure 2;

Figure 7 is a similar view taken on the line 7-7 of Figure 2 Figure 8 is a transverse sectional view taken on the line 8-8 of Figure 1;

Figure 9 is a detail sectional view part in elevation illustrating one of the cages and methods of supporting the boiler tubes;

Figure 10 is a detail sectional view illustrating the means of supporting the ends of the boiler tubes;

Figure 11 is a transverse sectional view taken through one ofthe collector tubes and its cover; I

Figure 12 is a vertical sectional view thereof partly in elevation; and,

Figure 7, one si tion 2 and fire box 3. The lire box 3 is surrounded. by the usual crown side-l of theboilcr; As the custon'iary boiler tubes form no direct part oi. the present invention,they aregnot shown in the drawings, but the front and rear tube plates are designated at 5 and 6 respectively.

As shown in the drawings for purposes of illustration, a locomotive boiler is used. but it should be understood that I am not to be limited to this particular type of boiler,-

but may apply the invention to a stationary boiler, or. in fact, to any other type of boiler.

and I might modify the various parts of' this invention so as to comply therewith so long as the principle of: the invention is notchanged. i

A pair, or row, or as many as may be desired, of collector tubes are employed. These tubes are shown at 7 and extend parallel with the outer sides of the crown side 4 of the boiler on the outside thereof and are encased by suitable coverings 8 which may be secured on the outer side of the boiler in any suitable manner. Suit able openings 9 are provided through which these said tubes may pass. The forward ends of the tubes 7 are extended within the portion 2 in parallel relation and adjacent the opposite sides thereof, as shown at .10, and are connected at their forward ends to a pairof boxes 11. These boxes are so cured to the boiler in any suitable manner and have connected. therewith the injector tubes 12. Tubes 13 extend from the forward end of the boxes 11 in axial relation to the tubes 10 and have their terminals extended through the front plate Y Depended extensions, shown in dotted lines by the reference character 14, are provided at the rear of the plate 5, through which the water may flow upwardly into the boxes 11 from the boiler. Theso'extensions 14: may be dispensed with, it desired, and pipes 15 may take their places. The pipes 15 may be connected at thet'orward ends of the the tubes 13 and pass through the plate 5, from whence they are extended downwardly and again pass rearwardly through this said plate into the bottom of the boiler for likewise directing the water upwardly and into said boxes.

Asshown in Figure 6, two separate pipes 15 may be employed, while, as shown in ngle pipe 1.5" may be used if desired.

In order that the water brought forward to the collectors 7 may be kept at the same temperature as the boiler, suitable openient points with removable plugs 16 which may be removed, when desired, for cleaning purposes.

.lieeding pipes 17 extend from the collector pipes 7 into the interior of the fire box at a slight downward slant, as clearly shown in Figure 5 or the drawings. These pipes 17 pass through cages 18 which may be attached to the sides .ofthe fire box 3 and its crown side 4: by suitable packing devices 19 desired to hold the said cages firmly in position and also to support said fire box and crown side in their proper spaced relation.

'The cages 18 supportthe' outer ends of the heating tubes 20 which surround the feeding pipes 17 and extend inwardly into the lire box in soaced arallel and concentric relation to the said pipes 17. The lower ends of these tubes 20 may be secured to the walls oi the firebox in any preferred manner, such as shown-in Figure 10, one

nlanncr being to reduce the ends of the tubes and extend them through both the wall of the fire box and the crown side, as shown at 9-1. or to provide a socket 22'. in'the ends thereof which receives the balls 23 carried by the spacing pins 24 .which pass through the walls or the said fire'box'and crown side, and which. are attached thereto in any suit able manner.

Referring more particularly to Figure .3 of

the drawings, the collector tubes are dispensed with and the ends ofthe tubes 10 are connected by a transverse collector tube 25 from which extend the before mentioned feeding pipes 17. These pipes 17, instead of being arranged transversely of the fire box, as shown in the remaining figures of the drawings, extend longitudinally therein at a slight downward incline. The cages and remaining apparatuses oi. these two figures are identical with those shown in the remaining figures of the drawings, so a detailed description thereof is not deemed necessary.

The boxes 11 shown in the drawlngs are connected at their lower extremitles by one or more tubes 26, so that when water is injected into the boiler either at theright side H orthe left side thereof, thiswater will be levelled by the two apparatuses and the current existing in the tubes 13 forces this water directly into the fire box. through the two apparatuses, where it is subdivided into as many parts as there are tubes within the fire box, which provides for a very rapid rising of the temperature in the injected water, which is superior to the temperature of the water in the boiler.

As shown by the dotted lines 1 articularly in Figure of the drawings, as many tubes and pipes 17 as is desired may be placed in the fire box, but for the purpose of illustrating the principle of the invention, 1 have only shown in full lines one row of such tubes.

As shown particularly in the device disclosed in Figures 1 and 2, the tubes 20 are arranged in staggered relation, each alternate tube being connected to the collector tube 7 upon the opposite side of the fire box.

In order to provide means for draining sediment from the boxes 11, suitable drain cocks 27 may be attached thereto, if desired.

In operation,,the water which comes from the tubes and 13 into the collectors 7 is introduced in the water tubes 17, subdivided in the various boiler tubes placed into the fire box, causing the temperature thereof to be immediately raised ahead of.

the temperature which exists in the boiler, and this water overflows from said tubes into the boiler through the open spaces in the cages 18.

From the foregoing description taken in connection with the accompanying drawings, it will be manifest, that a circulating device for boilers is provided which will fulfil all of the necessary requirements of such a device.

It should be further understood in this connection that various minor changes in the specific details of construction can be resorted to within the scope of the ap )ended claims, without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus fully described the inven tion, what- I claim, as new and desire to protect by Letters Patent is:

1. The combination in a device of the character described, with a boiler having a fire box, cages attached to the fire box and boiler and communicating with the interior of the boiler, collector tubes positioned at opposite sides of the boiler exterior of the fire box, feeding tubes communicating with the collector tubes and passing through the cages into the fire box, heating tubes surrounding the feeding tubes and carried by and communicating with the cages, and means for conveying water separately to the collector tubes from opposite sides of the boiler.

2. The combination in a device such as described, with a boiler including a fire box, a crown side for said boiler, collector tubes positioned exterior of the crown side of the boiler, coverings for the collector tubes secured to the crown side of the boiler, forming compartments surrounding said collector tubes, said crown side having openings therein providing access to said surrounding compartments from the interior of the boiler, cages connected to thefire box and crown side and retaining the same in normal position, said cages having communication with the interior of the boiler, feeding tubes communicating with the collector tubes and passing through said cages and through the fire box, heating tubes carried by the cages completely surrounding the feeding tubes and communicating with the interior of the boiler through said cages, and means for conveying water to the 001- lector tubes from the forward end of the boiler.

3. The combination in a device of the character described, with a boiler having a fire box therein, the crown side for said fire box forming a compartment between its inner surface and the outer side of the fire box communicating with the interior of said boiler, cages disposed in said compartment and secured at their ends to the fire box and fire box cover, said cages havin communication with the interior of saic boiler, collector tubes position-ed exterior of the boiler and adjacent said cages, feeding tubes communicating with the collector tubes and passing through said cages into the fire box and extending completely across the same, heating tubes carried by the cages and surrounding the collector tubes, said tubes being inclined downwardly into the fire box, boxes positioned centrally of the boiler upon opposite sides thereof, tubes connecting the collector tubes and boxes, tubes extending from the boxes to the forward end of the boiler into which water is fed from the boiler to said boxes, an equalizing tube connecting said boxes, and means for injecting water into the boxes from the outside of the boiler, substantially as and for the purposes set forth.

In witness whereof I have hereunto set my hand.

VITTORIO ANDRIOLI. 

